Hot-water heating system.



Patented Ja11.25, 1910.

ERNST SEGESVRY, OF BREMEN, GERMANY.

HOT-WATER HEATING SYSTEM.

Specification of Letters Patent.

.Patented Jan. 25, 1910.

Application filed December 24, 1908. Serial No. 469,178.

To all 'whom it may concern:

Be it known that I, ERNST Snonsvnr, engineer, citizen of Hungary,residing at Bremen, lVallenChausse 14S, in the free town of Bremen,Germany, have invented certain new and useful Improvements in Hot-lVaterHeating Systems, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to hot water heating systems having a high speedof circulation. The necessary work for circulating the water at highspeed is performed by a steam pump, which, like the steam generator usedin this invention, is distinguished from similar contrivanccs byespecially simple construction. The steam generator may be connecteddirectly to the hot water system, that is to say, without interpositionof an apparatus for securing the level of the water, so that the steamgenerated may be at a pressure approximately equal to that of the heightof the column of water in the het water heating system.

In the accompanying drawings forming part of this specification, likeletters of reference denote like parts wherever they occur, and Figure lis a vertical elevation of the heating system, and Fig. 2 is a verticalsectional elevation of the steam cylinder.

In Fig. l is shown hot water boiler a. connected by pipe e, havingenlargement el, to the steam generator b, which is arranged as the firstheating surface in said boiler, and said generator b is connected withsteam aecumulator c. Pipe f, extending from accumulator c, carries steamto pump f/ which operates, through its piston rod j, the -lever h,suitably hinged and weighted. Said lever 7L carries, at one extremity, apulley Z, over which works chain X. One end of said chain is suitablyfastened to the framework, and attached at its other extremity to abucket z'. On the upward stroke of said piston rod, bucket z' carrieswater from return vessel lc until it is tripped upon projection Y, whenthe water is dumped into feed vessel Z. Into this feed vessel alsoempties the exhaust steam from pump g through pipe c. I-Iot water pipe mleads from boiler a to return vessel 7c. The hot water in said returnvessel 7c is raised by bucket c' into feed vessel Z, passes thencethrough pipe m to the radiators n, or other heating devices, and thencereturns to boiler a.

The pump g, shown in detail in Fig. 2, is

so arranged that at a certain steam pressure it automatically starts,and on the pressure being increased, its speed increases, so that itcompletely consumes the steam furnished by the steam generator Theoperation of the parts of said pump is as follows: When the steamreaches working pressure the pump starts. Steam passes through valve 10into the cylinder, and raises piston f1' until the conc S of outletvalve s is prevented by its spring t, which is attached to said cone,and projection a from moving farther upward. lV hen this position hasbeen reached, and on the increased pressure of said spring t againstsaid projection a, the cone S is forced downwardly by said spring andout let valve s suddenly opens, allowing the steam to flow with fullforce through the pump, and exhaust through pipe c into feed vessel l,where it condenses. Inlet valve p is, however, so constructed, that itcloses when the steam rushes through the pump as just described, and thecone I is pressed lirmly against its seat p. The steam within the pumpr/ escapes through said outlet valve s which has remained open, and thepiston descends. lVhen the piston nears the end of its downward strokethe valves s and y) touch one another, the outlet valve s closes lirst,as its cone S hangs loosely, and the inlet valve p still remains closedby the pres sure of the steam. Not until after the out let. valve s hasclosed the inlet valve y) open-ed by the weight of the piston r, and thesteam raises the piston again, and the movements described are repeatedas long as the steam has sutlicient pressure.

In order that the pump may be able to fulfil the required condition ofbeing able to work only after a certain working pressure has beenreached, and of being able to consume considerably more steam after saidpressure has been slightly exceeded, water is raised by means of abucket 'i from return vessel up to feed vessel Z. As the quantity in thebucket fz' is always the same, so also is the pressure which the steammust possess in order to be able to raise the piston-rod operating saidbucket. The number of strokes per minute is dependent on the quicker orslower feed of the pump by the steam generator. If the generation ofsteam increases materially the steam pressure rises, and the motion ofthe piston is accelerated. If the steam forces down the level of thewater in the steam accumulator c, the pump g in consequence of increasedpressure Will run faster, and consequently consumes more steam, and asthe capacity of the generator b to make steam is limited, so, also, isthe extent to Which the Water Will sink. The provision of vessel Zprevents the Water from reaching a dangerously lovv level in the steamgenerator, which may be connected directly to the hot Water heatingsystem, as hereinbefore mentioned, Without the necessity of acheck-valve, or other similar safety-device. Steam accumulator c isarranged as loW as possible so that the Working pressure may beapproximately equal to the Water pressure in the boiler, and it isdesirable for the steam pressure to be as high as possible because thepump dimensions can then be smaller, and the steam be turned to betteraccount in performing Work. A smaller steam generator is thensuliicient, which is of advantage because it can be accommodated morereadily in the hot Water boiler. Steam accumulator c is connected at apoint above its bottom through safety pipe o With the hot Water pipe m,in order that the steam may escape in case the Water level sinks,through extraordinary circumstances, below the point of attachment ofsaid safety pipe o( Having thus described my said invention, what Iclaim, and desire to secure by Letters Patent is:

l. In a hot Water heating system, the combination of a steam generator,a steam accumulator connected thereto, a tank divided into a feedchamber and a return chamber, said feed chamber being located at asubstantially higher elevation than said return chamber, said feed andreturn chambers being in communication With the Water circulatingsystem, a pump comprising a lever and a bucket, said bucket beingoperatively connected to said lever, a motor in communication With saidsteam accumulator and adapted to operate said pump, means connectingsaid motor with said lever, and means for tilting said bucket wherebyWater in said return chamber is conveyed to said feed chamber.

2. In a hot Water heating system, the combination of a steam generator,a steam accumulator connected thereto, a tank divided into a feedchamber and a return chamber, said feed chamber being located at asubstantially higher elevation than said return chamber, said feed andreturn chambers being in communication With the Water circulatingsystem, a pump comprising a lever and a bucket, a pulley mounted on theend of said lever, a chain operating over said pulley and having one endattached to said tank, said bucket being attached to the other end ofsaid chain, a motor in communication With said steam accumulator andadapted to operate said pump, means connecting said motor with saidlever, and means to cause said bucket to be emptied whereby Water insaid return chamber is conveyed to said feed chamber.

3. In a hot Water heating system, the combination of a steam generator,a steam accumulator connected thereto, a tank divided into a feedchamber and a return chamber, said feed chamber being located at asubstantially higher elevation than said return chamber, said feed andreturn chambers being in communication with the Water circulatingsystem, a pump comprising a lever and a bucket, means for tilting thebucket, a pulley mounted on the end of said lever, a chain operatingover said pulley and having one end attached to said tank, said bucketbeing attached to the other end of said chain, a motor, means connectingsaid motor with said lever, a pipe connecting said steam accumulator andsaid motor, said motor being provided with a cylinder and a pistonoperating therein, an inlet valve in said cylinder, an outlet valve insaid piston, said outlet valve having a cone, a -spring attached to saidcone, a projection in said cylinder, said spring being adapted to engagesaid projection, whereby said outlet valve is opened, said cone beingadapted to open said inlet valve, and an exhaust pipe leading from saidcylinder to said tank.

4L. In a hot Water heating system, the combination of a steam generator,a steam accumulator connected thereto, a tank divided into a feedchamber and a return chamber, said feed chamber being located at asubstantially higher elevation than said return chamber, said feed andreturn chambers being in communication with the Water circulatingsystem, a pump comprising a lever and a bucket, means for tilting saidbucket, a pulley mounted on the end of said lever, a chain operatingover said pulley and having one end attached to said tank, said bucketbeing attached to the other end of said chain, a motor, means connectingsaid motor With said lever, a pipe connecting said motor and said steamaccumulator, an exhaust pipe leading from said motor to said tank, saidmotor being provided `With a cylinder and a piston operating therein,said cylinder having an inlet valve, said piston having an outlet valve,said outlet valve being adapted -to open andrclosealternately to saidinlet valve, and means for automatically opening and closing said inletand said outlet valves.

In testimony whereof I affix my signature inl presence of tivoWitnesses.

ERNST SEGESVARY. Witnesses HANS WoLFF, OTTO HOFMANN;

